%0 Journal Article %A Krajewski, Wiesław %A Viaro, Umberto %T Routh-type $L_2$ model reduction revisited %J Kybernetika %D 2018 %P 557-575 %V 54 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14736/kyb-2018-3-0557/ %R 10.14736/kyb-2018-3-0557 %G en %F 10_14736_kyb_2018_3_0557